user
In the following story, classify each of the characters into "protagonist" or "antagonist".

Input: The story is about an ambitious young man, Major Tom, who wants to become an astronaut. Major Tom begins training and meets a rival, Joe, who is already an accomplished astronaut. After months of hard work and dedication, Major Tom is finally accepted for a space mission. Joe, however, is furious, and his jealousy leads him to sabotage Major Tom's training by tampering with his space suit and other preparation measures.

Output:
assistant
Major Tom - Protagonist
Joe- Antagonist